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Method for preparing aluminium-titanium alloy blade

A technology of aluminum-titanium alloy and blades, which is applied in the field of preparing aluminum-titanium alloy blades, can solve problems such as short service life, low plasticity and toughness, and high possibility of metallurgical defects, and achieve batch stability improvement, simple process, and uniform structure Sexual ease of control

Active Publication Date: 2014-02-05
泊头市瑞恒机械有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its composition characteristics are: alloy elements allow a wide range of fluctuations (Al: 5.5%-6.75%), and allowable content of impurities (Fe: 0.3%max, O: 0.2%max, H: 0.015%max); thus bringing Higher potential for metallurgical defects, lower ductility and toughness, and shorter service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for preparing titanium alloy blades by investment casting, characterized in that: the mass percent content of each component of the alloy includes: Al 11.5%, Sn 3.5%, Fe 0.85%, Si 0.15%, Cr 0.15%, Ca 0.35%, Bi 0.55%, In 0.055%, Cu 0.035%, La0.015%, Y 0.035%, Mn 0.015%, V 0.055%, the balance is titanium and unavoidable non-metallic inclusions,

[0021] The preparation method of precision casting titanium alloy blades includes the following steps: preparing alloys according to the above proportions, melting and pouring of alloy materials: melting temperature: 1785°C, pouring temperature is 1705°C; finally demoulding, and heat treatment of the obtained blades: firstly, the blades Heating to 700°C for quenching, and then undergoing three aging treatments, the first aging treatment is at a controlled temperature of 460°C, kept for 2.5 hours, stirred and cooled by an argon fan under vacuum conditions, the second aging treatment is in an air box furnace, Control the t...

Embodiment 2

[0025] A method for preparing titanium alloy blades by investment casting, characterized in that: the mass percent content of each component of the alloy includes: Al 11%, Sn 3%, Fe 0.8%, Si 0.1%, Cr 0.1%, Ca 0.3%, Bi 0.5%, In 0.05%, Cu 0.03%, La0.01%, Y 0.03%, Mn 0.01%, V 0.05%, the balance is titanium and unavoidable non-metallic inclusions,

[0026] The preparation method of precision casting titanium alloy blades includes the following steps: preparing alloys according to the above proportions, melting and pouring of alloy materials: melting temperature: 1780°C, pouring temperature is 1700°C; finally demolding, and heat treatment of the obtained blades: firstly, the blades Heating to 700°C for quenching, and then undergoing three aging treatments, the first aging treatment is at a controlled temperature of 460°C, kept for 2.5 hours, stirred and cooled by an argon fan under vacuum conditions, the second aging treatment is in an air box furnace, Control the temperature at 41...

Embodiment 3

[0030] A method for preparing titanium alloy blades by investment casting, characterized in that: the mass percent content of each component of the alloy includes: Al 12%, Sn 4%, Fe 0.9%, Si 0.2%, Cr 0.2%, Ca 0.4%, Bi 0.6%, In 0.07%, Cu 0.04%, La 0.02%, Y 0.04%, Mn 0.03%, V 0.06%, the balance is titanium and unavoidable non-metallic inclusions,

[0031] The preparation method of precision casting titanium alloy blades includes the following steps: preparing alloys according to the above proportions, melting and pouring of alloy materials: melting temperature: 1800°C, pouring temperature is 1730°C; finally demolding, and heat treatment of the obtained blades: firstly, the blades Heating to 750°C for quenching, and then undergoing three aging treatments, the first aging treatment is at a controlled temperature of 460°C, heat preservation for 3 hours, stirring and cooling with an argon fan under vacuum conditions, the second aging treatment is in an air box furnace, controlled Th...

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Abstract

The invention discloses a method for preparing an aluminium-titanium alloy blade. The aluminium-titanium alloy is characterized by comprising the following components in percentage by mass: 11-12% of Al, 3-4% of Sn, 0.8-0.9% of Fe, 0.1-0.2% of Si, 0.1-0.2% of Cr, 0.3-0.4% of Ca, 0.5-0.6% of Bi, 0.05-0.07% of In, 0.03-0.04% of Cu, 0.01-0.02% of La, 0.03-0.04% of Y, 0.01-0.03% of Mn, 0.05-0.06% of V and the balance of titanium and inevitable nonmetal inclusions, and the strength of a titanium alloy plate is more than 1200MPa.

Description

technical field [0001] The invention relates to a method for preparing an aluminum-titanium alloy blade, belonging to the field of titanium-based alloy manufacturing. Background technique [0002] Ti-6Al-4V is the most widely used and most mature typical (α+β) two-phase titanium alloy. It has been researched and developed by various countries for nearly 40 years, and has its own alloy grade. Its composition characteristics are: alloy elements allow a wide range of fluctuations (Al: 5.5%-6.75%), and allowable content of impurities (Fe: 0.3%max, O: 0.2%max, H: 0.015%max); thus bringing Higher potential for metallurgical defects, lower ductility and toughness, and shorter service life. For this reason, a small number of developed countries led by the United States and the United Kingdom have developed corresponding low-gap alloys in the past 20 years, such as the United States UNS R56401, ASTM F468, Grade 23, AMS4930, Ti-64ELI, the United Kingdom IMI318ELI, France TA6VELI, etc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C1/02C22F1/18C23C4/06
Inventor 李茜王文姣邢桂生
Owner 泊头市瑞恒机械有限责任公司
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